I have just bought an Noctua NH-12 and I'm not sure where to plug in then second bigger fan. I plugged the first small one into 'CPU FAN' slot but there is another big fan with a pin cable. However, I don't seem to have another CPU fan connector on my motherboard. Can you guys help me. Here is a larger image of my mobo:
http://upload.wikimedia.org/wikipedia/commons/7/75/ASUS_M5A99X_EVO-top_PNr%C2%B00375.jpg
http://upload.wikimedia.org/wikipedia/commons/7/75/ASUS_M5A99X_EVO-top_PNr%C2%B00375.jpg